| Description | Spatial | Attributes |
The NBI is a collection of information (database) covering the more than 600,000 bridges located on public roads, including Interstate Highways, U.S. highways, State and county roads, as well as publicly-accessible bridges on Federal lands. It presents a State by State summary analysis of the number, location, and general condition of highway bridges within each State. Although the inventory contains locational information, it's accuracy is unverified, and in many cases the information is not provided or incorrect. Using information from the inventory, an attempt was made to conflate the bridges to a common reference network, TeleAtlas's DynaMap for Transportation. Over 75% of the inventroy was successfully conflated. the remaining bridges are included in this shapefile, but are located at longitude-latitude 0-0.
To document the physical characteristics and condition of the nation's road bridges.
The attributes of this shapefile are defined in the document "Recording and Coding Guide for the Structure Inventory and Appraisal of the Nations Bridges." A pdf version of the document, mtguide.pdf, is included with this shapefile.
publication date
The NBI database, or any portion thereof, can be freely distributed as long as this metadata entry is included with each distribution. The original metadata entry cannot be modified or deleted from any data transfer.
1200 NJ Ave, SE
Internal feature number.Definition Source:
ESRI
Feature geometry.Definition Source:
ESRI
State FIPS CodeDefinition Source:
FHWA
The FHWA reginon in which the bride existsDefinition Source:
FHWA
Structure NumberDefinition Source:
Federal Highway Administration
Record TypeDefinition Source:
Federal Highway Administration
Route Signing PrefixDefinition Source:
Federal Highway Administration
Designated Level of ServiceDefinition Source:
Federal Highway Administration
Route NumberDefinition Source:
Federal Highway Administration
Directional SuffixDefinition Source:
Federal Highway Administration
Highway Agency DistrictDefinition Source:
Federal Highway Administration
County (Parish) CodeDefinition Source:
Federal Highway Administration
Place CodeDefinition Source:
Federal Highway Administration
Features IntersectedDefinition Source:
Federal Highway Administration
Critical Facility IndicatorDefinition Source:
Federal Highway Administration
Facility Carried By StructureDefinition Source:
Federal Highway Administration
LocationDefinition Source:
Federal Highway Administration
Inventory Route/Min Vert ClearanceDefinition Source:
Federal Highway Administration
KilometerpointDefinition Source:
Federal Highway Administration
Base Highway NetworkDefinition Source:
Federal Highway Administration
LRS Inventory RouteDefinition Source:
Federal Highway Administration
Subroute NumberDefinition Source:
Federal Highway Administration
LatitudeDefinition Source:
Federal Highway Administration
LongitudeDefinition Source:
Federal Highway Administration
Bypass/Detour LengthDefinition Source:
Federal Highway Administration
TollDefinition Source:
Federal Highway Administration
Maintenance ResponsibilityDefinition Source:
Federal Highway Administration
OwnerDefinition Source:
Federal Highway Administration
Functional Class Of Inventory RouteDefinition Source:
Federal Highway Administration
Year BuiltDefinition Source:
Federal Highway Administration
Lanes On StructureDefinition Source:
Federal Highway Administration
Lanes Under StructureDefinition Source:
Federal Highway Administration
Average Daily TrafficDefinition Source:
Federal Highway Administration
Year Of Average Daily TrafficDefinition Source:
Federal Highway Administration
Design LoadDefinition Source:
Federal Highway Administration
Approach Roadway WidthDefinition Source:
Federal Highway Administration
Bridge MedianDefinition Source:
Federal Highway Administration
SkewDefinition Source:
Federal Highway Administration
Structure FlaredDefinition Source:
Federal Highway Administration
Bridge RailingsDefinition Source:
Federal Highway Administration
TransitionsDefinition Source:
Federal Highway Administration
Approach GuardrailDefinition Source:
Federal Highway Administration
Approach Guardrail EndsDefinition Source:
Federal Highway Administration
Historical significanceDefinition Source:
Federal Highway Administration
Navigation ControlDefinition Source:
Federal Highway Administration
Navigation Vertical ClearanceDefinition Source:
Federal Highway Administration
Navigation Horizontal ClearanceDefinition Source:
Federal Highway Administration
Structure Open/Posted/ClosedDefinition Source:
Federal Highway Administration
Type of Service On BridgeDefinition Source:
Federal Highway Administration
Type of Service Under BridgeDefinition Source:
Federal Highway Administration
Kind of Material/DesignDefinition Source:
Federal Highway Administration
Type of Design/ConstructionDefinition Source:
Federal Highway Administration
Kind of Material/DesignDefinition Source:
Federal Highway Administration
Type of Design/ConstructionDefinition Source:
Federal Highway Administration
Number Of Spans In Main UnitDefinition Source:
Federal Highway Administration
Number Of Approach SpansDefinition Source:
Federal Highway Administration
Inventory Route Total Horizontal ClearanceDefinition Source:
Federal Highway Administration
Length Of Maximum SpanDefinition Source:
Federal Highway Administration
Structure LengthDefinition Source:
Federal Highway Administration
Left Curb/Sidewalk WidthDefinition Source:
Federal Highway Administration
Right Curb/Sidewalk WidthDefinition Source:
Federal Highway Administration
Bridge Roadway Width Curb-To-CurbDefinition Source:
Federal Highway Administration
Deck Width/Out-To-OutDefinition Source:
Federal Highway Administration
Minimum Vertical Clearance Over Bridge RoadwayDefinition Source:
Federal Highway Administration
Reference FeatureDefinition Source:
Federal Highway Administration
Minimum Vertical Under ClearanceDefinition Source:
Federal Highway Administration
Reference FeatureDefinition Source:
Federal Highway Administration
Minimum Lateral Under ClearanceDefinition Source:
Federal Highway Administration
Minimum Lateral Under Clearance On LeftDefinition Source:
Federal Highway Administration
DeckDefinition Source:
Federal Highway Administration
SuperstructureDefinition Source:
Federal Highway Administration
SubstructureDefinition Source:
Federal Highway Administration
Channel/Channel ProtectionDefinition Source:
Federal Highway Administration
CulvertsDefinition Source:
Federal Highway Administration
Method Used To Determine Operating RatingDefinition Source:
Federal Highway Administration
Operating RatingDefinition Source:
Federal Highway Administration
Method Used To Determine Inventory RatingDefinition Source:
Federal Highway Administration
Inventory RatingDefinition Source:
Federal Highway Administration
Structural EvaluationDefinition Source:
Federal Highway Administration
Deck GeometryDefinition Source:
Federal Highway Administration
Underclear/Vertical and HorizontalDefinition Source:
Federal Highway Administration
Bridge PostingDefinition Source:
Federal Highway Administration
Waterway AdequacyDefinition Source:
Federal Highway Administration
Approach Roadway AlignmentDefinition Source:
Federal Highway Administration
Type of Work ProposedDefinition Source:
Federal Highway Administration
Work Done ByDefinition Source:
Federal Highway Administration
Length Of Structure ImprovementDefinition Source:
Federal Highway Administration
Inspection DateDefinition Source:
Federal Highway Administration
Designated Inspection FrequencyDefinition Source:
Federal Highway Administration
Fracture Critical DetailsDefinition Source:
Federal Highway Administration
Underwater InspectionDefinition Source:
Federal Highway Administration
Other Special InspectionDefinition Source:
Federal Highway Administration
Fracture Critical Details DateDefinition Source:
Federal Highway Administration
Underwater Inspection DateDefinition Source:
Federal Highway Administration
Other Special Inspection DateDefinition Source:
Federal Highway Administration
Bridge Improvement CostDefinition Source:
Federal Highway Administration
Roadway Improvement CostDefinition Source:
Federal Highway Administration
Total Project CostDefinition Source:
Federal Highway Administration
Year Of Improvement Cost EstimateDefinition Source:
Federal Highway Administration
Neighboring State CodeDefinition Source:
Federal Highway Administration
Percent ResponsibilityDefinition Source:
Federal Highway Administration
Border Bridge Structure NumberDefinition Source:
Federal Highway Administration
STRAHNET Highway DesignationDefinition Source:
Federal Highway Administration
Parallel Structure DesignationDefinition Source:
Federal Highway Administration
Direction Of TrafficDefinition Source:
Federal Highway Administration
Temporary Structure DesignationDefinition Source:
Federal Highway Administration
Highway System Of Inventory RouteDefinition Source:
Federal Highway Administration
Federal Lands HighwaysDefinition Source:
Federal Highway Administration
Year ReconstructedDefinition Source:
Federal Highway Administration
Deck Structure TypeDefinition Source:
Federal Highway Administration
Type of Wearing SurfaceDefinition Source:
Federal Highway Administration
Type of MembraneDefinition Source:
Federal Highway Administration
Deck ProtectionDefinition Source:
Federal Highway Administration
Average Daily Truck TrafficDefinition Source:
Federal Highway Administration
Designated National NetworkDefinition Source:
Federal Highway Administration
Pier/Abutment ProtectionDefinition Source:
Federal Highway Administration
NBIS Bridge LengthDefinition Source:
Federal Highway Administration
Scour Critical BridgesDefinition Source:
Federal Highway Administration
Future Average Daily TrafficDefinition Source:
Federal Highway Administration
Year of Future Average Daily TrafficDefinition Source:
Federal Highway Administration
Minimum Navigation VerticalDefinition Source:
Federal Highway Administration
Deficiency Status of the BridgeDefinition Source:
Federal Highway Administration
Longitude Decimal DegreesDefinition Source:
RITA/BTS
Latitude Decimal DegreesDefinition Source:
RITA/BTS
State Postal Code AbbreviationsDefinition Source:
USPS
Version of the databaseDefinition Source:
RITA/BTS